The most suitable renovation package selected for each Pilot Site - D2.3 - Dreeam
←
→
Page content transcription
If your browser does not render page correctly, please read the page content below
The most suitable renovation
package selected for each Pilot Site
D2.3
This project has received funding from the European Union’s Horizon 2020 research and innovation
programme under the Grant Agreement no 680511. This document does not represent the opinion of the
European Union, and the European Union is not responsible for any use that might be made of its content.
1 / 90
Deliverable number
PROJECT INFORMATION
Project acronym DREEAM
Grant agreement 680511
number
Project title Demonstration of an integrated Renovation approach for
Energy Efficiency At the Multi building scale
DOCUMENT INFORMATION
Title D2.3 The most suitable renovation package selected for each
Pilot Site
Version 1.1
Release date 07/09/18
Work package WP2
Dissemination level Public
DOCUMENT AUTHORS AND AUTHORISATION
Lead Exeleria (Miguel Fontela)
Contributor(s) PfP, ATER Treviso, Berlin 1892, Chalmers
Reviewed by PfP, ATER Treviso, Berlin 1892, Chalmers
Authorised by Coordinator (Holger Wallbaum)
DOCUMENT HISTORY
Version Date Modified contents Implemented by
1.0 14/07/17 First release Exeleria
1.1 07/09/18 Berlin PS added Exeleria
2 / 90
Executive summary
This report contains the selection of the most suitable renovation package for the DREEAM Project,
in order to come up with the most appropriate technical option, according to the following
indicators:
• Energy consumption: Primary energy savings.
• Economic: Investment, economic savings and return of the investment.
• Environmental: reduction of carbon dioxide emissions.
The renovation concepts developed in the task 2.2 have been presented to each building owner, who
has decided, with the help of internal technical experts, which one of all the packages is the most
suitable.
The reasons why a renovation package has been selected between all the concepts proposed have
been clearly explained.
The selected option for each Pilot Site is:
• Treviso: the selected Concept 1 reaches energy savings of 85 %.
• Padiham: for the electric dwellings, the selected Concept 5 reaches energy savings of 72 % and for the
electric & gas dwellings, the Concept 6 reaches a 70 %.
• Berlin: the selected Concept 1 reaches energy savings of 42 %.
Once the preferred renovation package has been selected, it will be developed in the next task: T2.4
Elaborated renovation packages
3 / 90
Table of contents
1 Summary of the renovation concepts for Padiham ...............................................................6
2 The most suitable renovation package for Padiham ..............................................................8
3 Summary of the renovation concepts for Treviso................................................................ 10
4 The most suitable renovation package for Treviso .............................................................. 12
5 Summary of the renovation concepts for Berlin .................................................................. 14
6 The most suitable renovation package for Berlin ................................................................ 16
7 Conclusions........................................................................................................................ 17
8 Annexes ............................................................................................................................. 18
8.1 T.2.1 Berlin Pilot Site............................................................................................................................. 19
8.2 T.2.2 Berlin Pilot Site............................................................................................................................. 53
4 / 90
Padiham (UK)
Pilot site
5 / 90
1 Summary of the renovation concepts for Padiham
The following table represents the results obtained in the definition of renovation packages for
Padiham according to the energy, economic and environmental indicators, that have been presented
to the building owners.
The table contains the results from the two scenarios calculated in the Task 2.2: analysis 1 focusing in
the envelope renovation and analysis 2 considering the maximal PV system possible.
6 / 90
Renovation package Description Energy savings Economic savings Investment Payback CO2 reduction
(€) (€) (years) (tCO2eq)
Concept 1 Envelope: Wall insufflated + int. aerogel, roof , floor 90/88 % 905,6/994 18.948/23.482 20,9/26,2 4,42/4,00
elec/elec&gas* (when possible). 3-glz window >100/>100 % 1.435/1.292 16.382/14.514 11,4/11,2 4,84/4,20
Air-water heat pump + storage tank
Mechanical extract ventilation
Solar photovoltaic
Concept 2 Envelope: Wall insufflated + int. aerogel, roof , floor 75/75 % 923/995 19.494/25.121 21,1/25,3 3,39/2,88
elec/elec&gas* (when possible). 3-glz window 85/87 % 1.210/1.320 14.745/21.907 12,2/16,6 3,12/3,22
Condensing boiler + storage tank
Mechanical extract ventilation
Solar photovoltaic
Concept 3 Envelope: Wall insufflated + int. aerogel, roof , floor 75 % 979 19.750 20,2 2,85
Elec* (when possible). 3-glz window 79 % 1.083 18.560 17,1 2,82
Night storage units
Electric boiler for DHW
Mechanical extract ventilation
Solar photovoltaic
Concept 4 Envelope: Wall insufflated + int. aerogel, roof , floor 75 % 975 18.787 19,3 3,40
Elec* (when possible). 3-glz window 81 % 860 11.698 13,1 2,96
Air-air heat pumps
Electric boiler for DHW
Mechanical extract ventilation
Solar photovoltaic
Concept 5 Envelope: External wall insulation, roof up to 300 mm 72 % 1.087 26.191 24,1 3,81
elec insulation
Night storage units
Electric boiler for DHW
Individual ventilation + heat recovery
Solar photovoltaic: 3kWp
Concept 6 Envelope: External wall insulation, roof up to 300 mm 70 % 936 23.000 24,6 2,41
elec&gas insulation
Condensing gas boiler
Individual ventilation + heat recovery
Solar photovoltaic: 3kWp
*Analysis 1 results
Analysis 2 results
7 / 90
2 The most suitable renovation package for Padiham
After a deep analysis of the renovation packages proposed in the WP2, the building owner has
decided to go through the Concept 5 for the 100 % electric dwellings and Concept 6 for the electric &
gas dwellings.
Below, a clarification of why this concept have been selected:
• By insufflating the air cavity of the wall is a limited solution due to the existing thickness of the air
camera. Therefore in this case, adding external insulation to the wall is the most effective action to
reach the desired U-Value.
• Instead of the good properties of the aerogel as an insulation, the solution of internal aerogel is
rejected because this solution reduces room area and increases the investment.
• The addiction of a thickness layer of insulation in the roof will reduce significantly the heating loses.
• For the case of 100 % electric dwellings, the solutions of air-water heat pump or condensing boiler
require the installation of a pipe system which makes it more complicated in comparison with the
substitution of the night storage units with more efficiency. Apart from this, it has the advantage of
the lowest tariff during the night for the electricity.
• For the case of electric & gas dwellings, the current gas boiler has a low efficiency. The substitution of
it for a condensing boiler makes it a very simple renovation measure, due to the advance of keeping
the current pipes system. The good efficiency of the condensing boiler decreases the consumption of
the heating system.
• The individual ventilation system is an ideal option in renovation when the available space is not to
much. Therefore is not necessary to install a false ceiling. The consumption of the fan is lower than in
a centralized system.
• The addiction of a solar photovoltaic system is a good combination with the night storage unit for the
case of 100 % electric dwellings, which can storage the production of photovoltaic during the day. Due
to the regulations in UK of the energy production by renewables, the export of energy to the grid is
very cost-effective.
• The energy savings obtained despite of being lower than in the other concepts, are very close to the
goal of 75 % from the current situation.
• Despite of the high payback of the concepts 5 and 6 compared with the others, the economic savings
are very similar to them and in some cases even higher.
• The reduction of carbon dioxide emissions of the concept 5 is one of the highest.
8 / 90
Treviso (IT)
Pilot site
9 / 90
3 Summary of the renovation concepts for Treviso
The following table represents the results obtained in the definition of renovation packages for
Treviso according to the energy, economic and environmental indicators, that have been presented
to the building owners:
10 / 90Renovation package Description Energy savings Economic savings Investment Payback CO2 reduction
(€) (€) (years) (tCO2eq)
Concept 1 Envelope: EWI, aerogel, roof and floor. 3-glz window 85 % 10.238 614.174 59,99 25,76
Condensing boiler + storage tank
Mechanical ventilation + heat recovery
Solar thermal (preheat water for the boiler)
Photovoltaic
Concept 2a Envelope: High envelope performance. Ventilated 88 % 10.965 605.799 55,25 26,39
façade, roof and floor. 2-glz window
Condensing boiler + storage tank
Mechanical ventilation + heat recovery
PV system in façade
Concept 2b Envelope: Medium-high envelope performance. 75 % 9.446 434.388 45,99 22,60
Ventilated façade, roof and floor. 2-glz window
Condensing boiler + storage tank
Mechanical ventilation + heat recovery
PV system in façade
Concept 3 Envelope: EWI, aerogel, roof and floor. 3-glz window 84 % 9.983 681.922 68,30 25,88
Mechanical ventilation + heat recovery
Air-water heat pump
11 / 904 The most suitable renovation package for Treviso
After a deep analysis of the renovation packages proposed in the WP2, the building owner has
decided to go through the Concept 1.
Below, a clarification of why this concept have been selected:
• The performance of the envelope is the highest of all the concept proposed. The addiction of aerogel
to break the thermal bridges makes it very interesting for the building owners. Due to the high
percentage of windows in the envelope, the solution of 3-glazed window reduces significantly the
heating demand because windows are the element of the envelope with worst thermal resistivity.
• The current gas boiler has a low efficiency. The substitution of it for a condensing boiler makes it a
very simple renovation measure, due to the advance of keeping the current pipes system. The good
efficiency of the condensing boiler decreases the consumption of the heating system.
• All the concepts have the same ventilation system. Thanks to the heat recovery system the ventilation
energy demand decreases significantly.
• The addiction of a solar thermal system is a good combination with the condensing boiler. The thermal
installation preheats the water before it is conducted to the boiler. Therefore, the energy necessary to
heat the water for the consumption will be less than take it directly from the cold water supply. The
concept with photovoltaic in the façade (concept 2) is less effective due to the small wall surface of
the building oriented to the south.
• The energy savings obtained fulfil the DREEAM approach reaching more than a 75 % of energy savings
from the current situation.
• In spite of the bad payback period obtained due to the high prices from the Italian database, the
economic energy savings are one of the highest from all the concepts proposed. With the concept 1,
each dwelling will save around 570 € per year.
• The reduction of carbon dioxide emissions of the concept 1 is very similar to other concepts which
similar energy savings (concept 2a and concept 3).
12 / 90Berlin (GE)
Pilot site
13 / 905 Summary of the renovation concepts for Berlin
The following table represents the results obtained in the definition of renovation packages for
Berlin according to the energy, economic and environmental indicators, that have been presented to
the Berlin 1892:
14 / 90Renovation package Description Energy savings Economic savings Investment Payback CO2 reduction
(€) (€) (years) (tCO2eq)
Concept 1 Envelope: roof and floor. 3-glz window 42 % 38.843 2.426.633 > 25 72,1
(intermediate)
No actions in the heating and DHW system
Photovoltaic
Concept 2 Envelope: roof and floor. 3-glz window (Low) 28 % 25.385 2.109.771 > 25 46,9
No actions in the heating and DHW system
Photovoltaic
Concept 3 Envelope: roof and floor. 3-glz window 61 % 57.977 4.136.654 > 25 103,9
External walls (high)
No actions in the heating and DHW system
Photovoltaic
15 / 906 The most suitable renovation package for Berlin
The deep analysis of the renovation packages proposed in the WP2, the building owner is confirmed
to go through the Concept 1.
Below, a clarification of why this concept have been selected:
• The performance of the envelope is the adequate to reach savings in the heating demand. The current
values of the external walls are very good that is not necessary to add insulation to them The low price
of the energy for the district heating makes not necessary to improve the envelope in a deeper way.
• In all of the concepts is not considered the substitution of the district heating, which has high
efficiency.
• The high price of the electricity compared with the district heating rewards the concepts with a higher
photovoltaic system. This rules out Concept 2, which has the smallest PV installation.
• Instead of the higher energy savings for Concept 3, the investment necessary is two times higher than
Concept 1.
• Concept 1 has bigger battery size. That means better performance of the system in case of high
specific demands in short time.
16 / 907 Conclusions
The renovation packages presented to the Building Owners fulfil the DREEAM aim. These options of
renovation achieves a high reduction of the primary energy of the building in a cost-efficient way,
taking into account the implementation of renewable energy systems and the increment of the
renovation scope to multiple buildings.
The criteria to select which of the proposed renovation options suits better for the Pilot Site is very
subjective. There are many target parameters that can be considered while taking a decision of that
type:
• To reach the maximum energy savings
• To reach the maximum economic savings
• To find the most economical solution
• To reduce the maximum emissions
• To benefit from Renewables
• To find the easiest and less tenant disturbing solution
• To solve indoor air quality issues
• Etc.
It is for this reason, that depending on the parameters that each Building Owner has set, their
election will be the most appropriate for their interests even though some of the other options could
be more attractive considering other indicators.
17 / 908 Annexes
1. T2.1 Berlin Pilot Site
2. T2.2 Berlin Pilot Site
18 / 908.1 T.2.1 Berlin Pilot Site
19 / 9020 / 90
21 / 90
22 / 90
23 / 90
24 / 90
25 / 90
26 / 90
27 / 90
28 / 90
29 / 90
30 / 90
31 / 90
32 / 90
33 / 90
34 / 90
35 / 90
36 / 90
37 / 90
38 / 90
39 / 90
40 / 90
41 / 90
42 / 90
60 43 / 90
44 / 90
45 / 90
46 / 90
47 / 90
48 / 90
49 / 90
50 / 90
51 / 90
52 / 90
8.2 T.2.2 Berlin Pilot Site
53 / 9054 / 90
55 / 90
56 / 90
57 / 90
58 / 90
59 / 90
60 / 90
61 / 90
62 / 90
63 / 90
Concept 3,
64 / 9065 / 90
66 / 90
67 / 90
68 / 90
69 / 90
70 / 90
71 / 90
72 / 90
73 / 90
74 / 90
75 / 90
76 / 90
77 / 90
78 / 90
79 / 90
80 / 90
81 / 90
82 / 90
83 / 90
84 / 90
85 / 90
86 / 90
87 / 90
88 / 90
89 / 90
90 / 90
You can also read
